Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd050504248890d8…

MALICIOUS

PDF

50.0 KB Created: 2020-04-02 21:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 87878097336e067dfa3909b1e375af13 SHA-1: dacf6c6bdbc96c7396dad00fdce21af41633c728 SHA-256: cd050504248890d8e724e9365fafa91333afe3bcec8dbb6a7e16a084893ef811
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to other PDF files on various domains, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains references to a book title and the wkhtmltopdf application, and also embeds several URLs. The primary heuristic indicates a PDF link farm, and the presence of embedded URLs further supports the malicious intent of directing users to external, potentially harmful, content.

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://5pointauto.com/uploads/1/3/0/8/130814630/130814630.html#libro+ronja+la+hija+del+bandolero+pdf
    • http://mtdiablolandscaping.com/uploads/1/3/0/5/130588983/3511966.pdf
    • http://the-boujee-boutique.com/uploads/1/3/1/0/131070559/ec4e76a50748f6.pdf
    • http://soulworkscollective.com/uploads/1/3/0/6/130603827/dce409b43339b.pdf
    • http://redlandcap.com/uploads/1/3/0/2/130289354/zulojew.pdf
    • http://typingduel.com/uploads/1/3/0/5/130588675/d42adb08d0.pdf
    • http://consertlar.net/uploads/1/3/0/6/130605240/folonezafasut_meroxap_lesuwaw_godefuxefe.pdf
    • http://hagermanrail.com/uploads/1/3/0/6/130604950/4bb70fab5c959.pdf
    • http://atticustiling.com/uploads/1/3/0/6/130620603/mifikigixud.pdf
    • http://salempipeansteelco.com/uploads/1/3/0/7/130775660/zasokujadiwefet_benugusej_tigenafizux_tenarugapoxo.pdf
    • http://newkids.co.uk/uploads/1/3/1/3/131381761/mejasejadofu.pdf
    • http://madeinmendocino.net/uploads/1/3/0/5/130588614/2311537.pdf
    • http://workplacevirtuathon.com/uploads/1/3/0/5/130539774/godupeziniw-zuvebakoto-zitidivelan-satako.pdf
    • http://christopherandsabrina.com/uploads/1/3/0/7/130739174/revulatamobufa.pdf
    • http://aspccc.com/uploads/1/3/0/6/130621213/tikuw.pdf
    • http://nearspaceengineering.org/uploads/1/3/0/7/130775961/d81587a4596447.pdf
    • http://n1-nw1-student-housing-studios-camden-kings-cross-london.co.uk/uploads/1/3/0/6/130639281/f51627b3678.pdf
    • http://facesoftheforgotten.com/uploads/1/3/0/6/130640142/dugidalorow-levaverut.pdf
    • http://hope4teachers.com/uploads/1/3/0/6/130604918/kafub.pdf
    • http://jsnobles.com/uploads/1/3/0/6/130604452/59f539c4d4.pdf
    • http://yourself-storage-units.com/uploads/1/3/0/2/130289756/xapalimol.pdf
    • http://ftp.rosebudelectric.com/uploads/1/3/0/7/130776175/nineledemizafiw.pdf
    • http://chimimundo.net/uploads/1/3/0/7/130738711/56c4f720bbeb.pdf
    • http://73micron.com/uploads/1/3/0/7/130739764/2593882.pdf
    • http://harmony-4you.com/uploads/1/3/0/7/130739544/72576e2e33666.pdf
    • http://73micron.com/uploads/1/3/0/7/1307397
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077fa.bin
4de237600daca4f2821a6d86d5c0b9fabfa34166c0e78999c6764c5b3f92c691		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FA 9508 bytes
font_01_sfnt_off00009992.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9992 2652 bytes
font_02_sfnt_off0000a2f9.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2F9 16036 bytes

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